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121543-1 — LIMITER,ELECTRICAL NOISE

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

121543-1: LIMITER,ELECTRICAL NOISE.

The LIMITER,ELECTRICAL NOISE is a the manufacturer industrial component. Key specifications include material: RUBBER CHLOROPRENE CLASS CR OVERALL, hole_diameter: 0.312 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, overall_width: 19.890 INCHES NOMINAL IN, aperture_width: 17.130 INCHES NOMINAL IN, overall_length: 42.420 INCHES NOMINAL IN, aperture_length: 39.660 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-163-9782, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
MRO→ MRO_GENERAL→ 121543-1
NSN: 5310-00-163-9782
NIINs: 001639782, 014795970, 015446996
FSC: 5310 — Nuts and Washers
CAGE: 09205 — LOCKHEED MARTIN CORP ELECTRONICS AND MISSILES DIV (USA)
SPECIFICATIONS
materialRUBBER CHLOROPRENE CLASS CR OVERALL
hole_diameter0.312 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
overall_width19.890 INCHES NOMINAL IN
aperture_width17.130 INCHES NOMINAL IN
overall_length42.420 INCHES NOMINAL IN
aperture_length39.660 INCHES NOMINAL IN
style_designatorNON-CIRCULAR
bolt_hole_quantity56
inside_corner_radius0.250 INCHES NOMINAL IN
cross-sectional_thickness0.060 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
material_document_and_classificationMIL-R-6855 CL2,TY A,GR 40 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-163-9782
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 121543-1 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
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GENERAL CHARACTERISTICS ITEM DESCRIPTION: BERYLLIUM COPPER QQ-C-533 TEMPER A OR TEMPER 1/4 HARD,0.250 INCH ID. 0.562 INCH OD. 0.004 INCH THK IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONBERYLLIUM COPPER QQ-C-533 TEMPER A OR TEMPER 1/4 HARD,0.250 INCH ID. 0.562 INCH OD. 0.004 INCH THK IN
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 121543-1?
121543-1 is a LIMITER,ELECTRICAL NOISE. It is classified as a MRO (MRO_GENERAL).
What is the NSN for 121543-1?
121543-1 is cataloged in the U.S. Government catalog under NSN 5310-00-163-9782. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.